You're going in June and there will surcharges at lots of places. Get the DP, not necessarily the Deluxe. That way you aren't paying and extra $20-30 each day at those meals. Be sure to book some buffets so everyone can have choices and your teens can graze. Even if you pay OOP for additional food (a late burger or pizza type fix) it won't break the bank and won't cost as much as the Deluxe.
Just saw you said 6days so that means 5 nihgts of the plan.
It appears that you'll be there 5 nights, party of 6 then the costs are:
Basic Plan: $1140
Deluxe Plan: $2100
- Extra: Refillable mugs $12.49pp if you paid OOP for these ($75 Value)
- Extra: A non issue if your TS meal is a buffet
- Extra: TS meal, you're paying $32 more for this and that meal will likely cost you $25-35 anyway so not a huge extra charge
- Extra: Snack credit, Valued at $3 ($3 x 5 nights x 6 guests = $90)
So if you bought the Basic DPlan, Refillable mugs and paid for extra snacks your cost would be $1305, $800 less. Do you really think you'll need $800 more to eat?.
So book one group TS meal a day then let them spend their own Snack and CS credits as they see fit. Some of the CS meals are large so they'll either get their fill or figure out how to share and get 2 meals for one credit.
One tip that really helped us: you get two beverages with a CS breakfast. So let's say you pay OOP for the refillable mugs. They get the beverage they actually want to drink in their mug then grab a couple of bottled drinks to take to the park ie. saving snack credits. We usually grabbed a water and drank the other with our meal (we didn't get mugs).
As for Buffets I'd highly recommend Boma for your group. The buffet and resort should rank high on the Cool and Wow meters! We really enjoyed our late breakfast (11:10 or so) at Chef Mickey's. So in theory you could do an 8am EHM for 2-3 hrs then eat your midday meal there and save your CS for a dinner at the resort or in the park. A non buffet your teens may enjoy is Coral Reef. I honestly didn't think the appetizers were great (mind you we had eaten at Narcoossee's the night before, so my pallette was spoiled) but loved our entree and my kids sundae.
Congrats to your senior and have a Magical time!